The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 2025
Filed:
Aug. 19, 2024
Asia Vital Components Co., Ltd., New Taipei, TW;
Chih-Cheng Tang, New Taipei, TW;
ASIA VITAL COMPONENTS CO., LTD., New Taipei, TW;
Abstract
A braking structure for centrifugal fan includes an impeller; a braking base located at a bottom of a shaft barrel of the impeller and provided with pawls; and a braking module pivotally connected to a shaft of the impeller and internally provided with movable hooks and elastic elements. When the impeller rotates forward, the movable hooks are engaged with the elastic elements and retreated in the braking module. When the impeller fails and rotates backward due to a backflow of air, the movable hooks are disengaged from the elastic elements and centrifugally thrown out of the braking module to engage with the pawls and provide a braking effect. When the impeller operates normally again, the movable hooks are pushed by inclined surfaces of the pawls to retreat into the braking module. The braking structure has good compatibility and can be actuated and disenabled repeatedly without power supply.